Theft alarm for automobiles



Jan. l925- 1,522,438

C. E. GOODSPEED I THEFT ALARM FOR AUTOMOBILES Filed May 1924 2 Sheets-Sheet l 6.27. /oods oe/ed/ ATTORNEY WITNESS:

Jan, ,6, 1925.

C. E. GOODSPEED THEFT ALARM FOR AUTOMOBILES Filed May 3 1924 2 Sheets-Sheet 2 III/I! III 0 E. Q oools oeeol INVENTOR ATTORNEY WITNESS:

CHARLES E. GOODSPEED;YOF SAN DIEGO, CALIFORNIA.

TES' Y A-TEEN? UlTEfi: ST

THEFT ALARM F03 AUTOMOBILES.

Application filed May 28, 192%. Serial No. 716,495.-

To all whom it may concern: bowed clamp element 8 at its lower end Be it known that 1, CHARLES E. Goonwhich embraces the upper face of the exsrnnn, a citizen of the United States, rehaust pipe 6 illustrated, and coacts with siding at San Diego, in the county of San a similar element 9 embracing the under- 5 Diego and State of California, have invented side of the pipe 6, these clamping elements 8 new and useful Improvements in Theft and 9 being retained in position on the pipe Alarms for Automobiles, of which the fol- 6 by fastenings 10. Arranged centrally lowing is a specification. within the casing or guard 7 is a whistle 11 My invention relates to theft alarms for having its lower end fast with the clamping l0 automobiles and its principal object is to element 8 and registering with the opening provide an alarm of this character which Y to permit the exhaust gases to pass from will prevent an unauthorized person from the pipe 6 into the whistle, thence through driving an automobile without sounding an its outlet 12 to sound the whistle. alarm. In order to control the passage of exhaust 15 A further object is to provide a theft gases into the whistle, I provide a valve 13 alarm of this character which includes an which is pivoted as at 14 to the lower end exhaust gas operated audible signal and a of the whistle and when the device is in lock controlled mechanism; for controlling operative position, the sound signal occupies communication between the signal and the a position transversely of the pipe 6 as exhaust pipe of an automobile. shown in Figure 4:.

Another object of the invention is to pro- Arranged below the drivers seat of the vide a device of this character which can automobile is a conventional key operated be readily installed on any automobile withlock designated generally at 1.5 and includes out altering or changing the parts of the a laterally extending rotatable element 16 same. 7' which carries an eccentric 17. ii crank arm lVith the preceding and other ob 'ccts and i8 is fixed to the pivot 1a to which the lower advantages in mind, the invention consists end an operating rod 19 is pivotally conin the novel combination of elements, connccted the latter passing through the housstruction and arrangement of parts and oping or guard 8 and carries a circular stop 20 30 eration, to be hereinafter explicitly referred upon its upper end and which engages the to, claimed and illustrated in the accompaeccentric 17. nying drawing, wherein The operation of the invention is as Figure l is a view partly in elevation and follows:

)artl 1 in section of an automobile e ui. )ned The operator rotates the rotatable eled l i 35 with my invention. ment 16 by means of a key that he has in his Figure 2 1s a. vertical sectional view taken possessi on whi ch through the instrumenon line 2-2 of Figure 1. tality of the element above mentioned Figure 3 is an enlarged detail view of swings the alve to a vertical position to the device shown partly in elevation and sever communication between the exhaust 4o partly in cross section. pipe 6 and the atmosphere.

Figure f is vertical sectional view of the It follows that in the event that an unaudevice, and, thorized person starts the engine of the Figure 5 is a similar view taken at right automobile the exhaust gases passing into angles to Figure 4. th whistle 11 will sound the same and of 45 Referring to the drawings in detail, wherecourse indicate to the owner or officers of in corresponding characters of reference 08- the law that the automobile is being stolen. note the corresponding parts throughout the When the rotatable element 16 of the lock is several views, the numeral 5 designates a rotated in the reverse direction the valve 13 conventional automobile and 6 the exhaust will assume a horizontal position within the 50 manifold thereof, having an opening arlower end of the whistle and permit the exranged in its upper face at a point below haust gases to pass through the pipe 6 in 10 the drivers seat of the automobile. A cylinthe usual manner. drical perforated housing or guard is desig- While I have shown and described the nated at 7 and is formed with a transversely preferred. embodiment of the invention, it is to be understood that changes in the arrangement of parts may be made and that I am only limited by the appended claim.

Having thus described the invention, 5 What is claimed is The combination with an exhaust pipe of an automobile, a Whistle supported on the exhaust pipe and having communication therewith, a pivoted valve controlling com- 10 munication between the exhaust pipe and Whistle, a lock including a rotatable element having alaterally projecting stem, an eccentric fixed to the stem, a circular strap engaging the periphery of the eccentric and a rod secured to the circular strap and having operative connection With the pivoted valve.

In testimony whereof I affix my signature.

CHARLES E. GOODSPEED. 

